Dust-catcher.



A .aan

:ranas M.' cochant, or Wnsfrmonr screenen, renner-Lirama.

DUST-CATCHER.

To all whom it may concern:

Be it known that I, JAMES M. GOODELL, a citizen'of the United States, residing in the borough of Westmont, in the county of Cambrial and State of Pennsylvania, have inventedircertain new and useful Improvements in' Dust-Catchers; and I do hereby declare the following to be a full, clear, and enact description. of the invention, such as will enable others Skilled in the art to which it appertains tojmake and use the same.y

My inventionrelates more particularly to .that type ot dust catchers used to separate dust vfrom the gases taken oil at the top of blast furnaces, but the novel construction v'thereof enablesit to be used to separate dust from air" or any other gas. I

I provide in my improved dust catcher a cylindrical outer casing with a conical shaped bottom, a tangential inlet which whirls the entering gas and dust about the internalperiphery of a plurality of hard crhilled plates, "and I provide afcentral channel for taking oila the dust-freed gas, and

other apparatus for removing the deposited dust.

One object of my invention is to finally separate the dust from the gas current during the period when the gas has a maximuml whirling action, in sucha manner that there is xno opportunity for the settling dust to get picked up again by the main gas curre1it,`as is the case in the common formsof dust catchers.

Another object is lto so construct the,"

lower portion of my dust catcher, that the sett.led.dustwill'1 not be carried up the centrally located gas discharge pipe by the siphoning action of the outgoing gas.

Another object of` myinvention is to use in the construction thereof such material for constructing the plates of the screen as will not be easily worn away by the abrasivea'ction of the dust.

A ilurther object of my invention is toY provide a construction whereby the plates i Aforming the screen may be readily removed and renewed.

yReferring now to. vthe accompanying drawings in which like characters of reference indicate like parts:-Figure 1 is a sectional ll'elevation of my improved dust catcher on the line I--I of Fig. 2 and Fig. 2 is a horizontal sectional elevation of the l dus@ catcher on the line Ill-,.II ot Fig. 1.

. The 'outer casing v1 isprovided with a vSpecicatlon of Letters latent.

hopper bottom 2, to the interior sides of which brackets 3 are secured, said brackets 3 being of such form as to prevent the settling of dust thereon and to rigidly support a hopper or Jr'unnel member 4; with a valve seat in the lower portion thereof. The vertically projecting flanges 5 of the hopper 4 are adapted to be received by the grooves 6 of the hard chilled plates 7, and the amount of openings 8 between the plates is adjustable by rotating the plates around the flanges 5. f

Patented Jan. 12, 1915. a

Application sied Jury io, 1914. semi No. 850,103.

A gas channel 9, adapted to receive gas i from the upper region of the hopper 4, passes up through the centralportion of the outer casing and forms, as it were, a Whirling chamber 10, in the space inclosed by the plurality of hard chilled plates. A tangential inlet 11 is provided for the whirling chember 10 near the top of said chamber and vertical side plates l2 which extend above and below the inlet 11 inclose that part of the whirling chamber 10 that the hard chilled plates 7 do not surround; said plates 12 being provided with flanges 13 which are riveted to the inlet pipe 11.v

The dust settling chamber 14, which is intermediate of the outer casing 1 and the screen formed by plates 7 and 12, is covered with a ring plate y15, which is secured to the outer casing 1 bymeans of the curved angle bars 16. A second ring plate 17, attached to the pipe 9 by means of curved angle bars 18, forms a covering for the whirling chamber 10.

An open-space is left intermediate the plates 15 and'17, through which the hard covering for the space intermediate the ring plates 15 and 17,` and grooves 2O formed therein receive the projections 21 of the hard chilled plates 7; whereby the said hard chilled plates .are secured and held in the desired position.

Cone valves 22 and 23 secured to the valve rod 24 are adapted to close openings respectively in the hopper bottom 4 and the hopper bottom 2. .The lever 25 attached to the hopper 2, by means of a fulcrum member 26, is adapted to control the motion of the valve rod 2li. In order thatthe valves 22 and 23 may be closed automatically, and remain closed when it is not desired to have them open, weights '27 are hung from the outer ing, an inner screen member formed of a plurality of inwardly projecting plates circumferentially adjustable around the aXis of the outer casing, means for removing and renewing the said plates, a space intermediate the screen and the 'outer casing, means for tangentially admitting gas and dust into the interior of the said screen, a centrally located elongated channel adapted to take o the purified gas, and means for removing the settled dust.

9. A dust catcher vcomprising an outer casing, an inner screen formed of a plurality of inwardly projecting plates, a'space intermediate the screenl member and the outer casing, an opening in said casing provided with a removable covering, said projecting plates being alined with thesaid opening and adapted to loe Withdrawn therethrough, means for itangentially admitting the gas and dust iito the interior of the screen, means for taking ofi' the purified gas and means for removing the settled dust.

In testimony whereof I hereto affix my 'signature in the presence of two Witnesses.

JAMES M. GOODELL.

Witnesses:

ELMER SEAVEY, HENRY S. SHARP. 

